There are a variety of air pollutants that can adversely impact health, including diesel exhaust from vehicles and other sources. In the Duwamish River valley of Seattle, WA, there are many sources of air pollution that emit diesel exhaust. Based on concerns of local residents, the overall objective of the Diesel Exhaust Exposure in the Duwamish Study, or DEEDS, was to measure exhaust levels throughout two Duwamish River valley neighborhoods: South Park and Georgetown. I assisted in nearly all spects of this pilot study which included the deployment of nitrogen oxides (NOx) air samplers to nine sites throughout the two neighborhoods to perform passive sampling over a ten day period in the summer. During NOx sampling, fine and ultrafine particle measurements were also collected for ten minutes at each of the nine sites using direct reading instruments and a mobile setup. These pilot study results collected from this preliminary assessment were used to optimize location selection for measurement of NOx, NO2, 1-nitropyrene, light absorbing carbon, and fine particulate matter during the DEEDS sampling campaigns taking place over the past year.